medía hasta 12-13 metros de largo y podía alcanzar una altura de alrededor de 4 metros hasta la cadera

brevirostris) is an extinct genus of mammal that lived during the Miocene of the Neogen period

the large long-necked dinosaurs

pointed beak

Sphenacodon ferox skeleton medía hasta 12-13 metros deSphenacodon ferox : A primitive predator on the path of mammals During the Early Permian, some 300 million years ago, terrestrial ecosystems were dominated by a diverse and constantly evolving fauna. Among the most prominent predators of that time was Sphenacodon ferox , a carnivorous synapsid that inhabited the regions that now constitute the southwestern United States. This animal, although extinct for hundreds of millions of years, represents a key